diff options
Diffstat (limited to 'arch')
49 files changed, 437 insertions, 132 deletions
diff --git a/arch/arm/boot/dts/armada-370-netgear-rn102.dts b/arch/arm/boot/dts/armada-370-netgear-rn102.dts index 4e24932c6e30..1c83b7ce0982 100644 --- a/arch/arm/boot/dts/armada-370-netgear-rn102.dts +++ b/arch/arm/boot/dts/armada-370-netgear-rn102.dts @@ -87,6 +87,7 @@ isl12057: isl12057@68 { compatible = "isil,isl12057"; reg = <0x68>; + isil,irq2-can-wakeup-machine; }; g762: g762@3e { diff --git a/arch/arm/boot/dts/armada-370-netgear-rn104.dts b/arch/arm/boot/dts/armada-370-netgear-rn104.dts index 30586e47986a..5fbfe02964dc 100644 --- a/arch/arm/boot/dts/armada-370-netgear-rn104.dts +++ b/arch/arm/boot/dts/armada-370-netgear-rn104.dts @@ -93,6 +93,7 @@ isl12057: isl12057@68 { compatible = "isil,isl12057"; reg = <0x68>; + isil,irq2-can-wakeup-machine; }; g762: g762@3e { diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi index 74391dace9e7..2a9f4caac643 100644 --- a/arch/arm/boot/dts/armada-38x.dtsi +++ b/arch/arm/boot/dts/armada-38x.dtsi @@ -381,6 +381,13 @@ clocks = <&gateclk 4>; }; + rtc@a3800 { + compatible = "marvell,armada-380-rtc"; + reg = <0xa3800 0x20>, <0x184a0 0x0c>; + reg-names = "rtc", "rtc-soc"; + interrupts = <GIC_SPI 21 IRQ_TYPE_LEVEL_HIGH>; + }; + sata@a8000 { compatible = "marvell,armada-380-ahci"; reg = <0xa8000 0x2000>; diff --git a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts index d81430aa4ab3..fc8bdfcd2348 100644 --- a/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts +++ b/arch/arm/boot/dts/armada-xp-netgear-rn2120.dts @@ -100,6 +100,7 @@ isl12057: isl12057@68 { compatible = "isil,isl12057"; reg = <0x68>; + isil,irq2-can-wakeup-machine; }; /* Controller for rear fan #1 of 3 (Protechnic diff --git a/arch/arm/configs/mvebu_v7_defconfig b/arch/arm/configs/mvebu_v7_defconfig index 627accea72fb..2400b9f52403 100644 --- a/arch/arm/configs/mvebu_v7_defconfig +++ b/arch/arm/configs/mvebu_v7_defconfig @@ -112,6 +112,7 @@ CONFIG_LEDS_TRIGGER_HEARTBEAT=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_S35390A=y CONFIG_RTC_DRV_MV=y +CONFIG_RTC_DRV_ARMADA38X=y CONFIG_DMADEVICES=y CONFIG_MV_XOR=y # CONFIG_IOMMU_SUPPORT is not set diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c index bea7db9e5b80..2e11961f65ae 100644 --- a/arch/arm/kernel/module.c +++ b/arch/arm/kernel/module.c @@ -41,7 +41,7 @@ void *module_alloc(unsigned long size) { return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, - GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE, + GFP_KERNEL, PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE, __builtin_return_address(0)); } #endif diff --git a/arch/arm64/kernel/module.c b/arch/arm64/kernel/module.c index 9b6f71db2709..67bf4107f6ef 100644 --- a/arch/arm64/kernel/module.c +++ b/arch/arm64/kernel/module.c @@ -35,8 +35,8 @@ void *module_alloc(unsigned long size) { return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, - GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE, - __builtin_return_address(0)); + GFP_KERNEL, PAGE_KERNEL_EXEC, 0, + NUMA_NO_NODE, __builtin_return_address(0)); } enum aarch64_reloc_op { diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c index f295f9abba4b..965ab42fabb0 100644 --- a/arch/ia64/kernel/topology.c +++ b/arch/ia64/kernel/topology.c @@ -217,14 +217,12 @@ static ssize_t show_number_of_sets(struct cache_info *this_leaf, char *buf) static ssize_t show_shared_cpu_map(struct cache_info *this_leaf, char *buf) { - ssize_t len; cpumask_t shared_cpu_map; cpumask_and(&shared_cpu_map, &this_leaf->shared_cpu_map, cpu_online_mask); - len = cpumask_scnprintf(buf, NR_CPUS+1, &shared_cpu_map); - len += sprintf(buf+len, "\n"); - return len; + return scnprintf(buf, PAGE_SIZE, "%*pb\n", + cpumask_pr_args(&shared_cpu_map)); } static ssize_t show_type(struct cache_info *this_leaf, char *buf) diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c index 2a52568dbcd6..1833f5171ccd 100644 --- a/arch/mips/kernel/module.c +++ b/arch/mips/kernel/module.c @@ -47,7 +47,7 @@ static DEFINE_SPINLOCK(dbe_lock); void *module_alloc(unsigned long size) { return __vmalloc_node_range(size, 1, MODULE_START, MODULE_END, - GFP_KERNEL, PAGE_KERNEL, NUMA_NO_NODE, + GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE, __builtin_return_address(0)); } #endif diff --git a/arch/mips/netlogic/common/smp.c b/arch/mips/netlogic/common/smp.c index 4fde7ac76cc9..e743bdd6e20c 100644 --- a/arch/mips/netlogic/common/smp.c +++ b/arch/mips/netlogic/common/smp.c @@ -162,7 +162,6 @@ void __init nlm_smp_setup(void) unsigned int boot_cpu; int num_cpus, i, ncore, node; volatile u32 *cpu_ready = nlm_get_boot_data(BOOT_CPU_READY); - char buf[64]; boot_cpu = hard_smp_processor_id(); cpumask_clear(&phys_cpu_present_mask); @@ -189,10 +188,10 @@ void __init nlm_smp_setup(void) } } - cpumask_scnprintf(buf, ARRAY_SIZE(buf), &phys_cpu_present_mask); - pr_info("Physical CPU mask: %s\n", buf); - cpumask_scnprintf(buf, ARRAY_SIZE(buf), cpu_possible_mask); - pr_info("Possible CPU mask: %s\n", buf); + pr_info("Physical CPU mask: %*pb\n", + cpumask_pr_args(&phys_cpu_present_mask)); + pr_info("Possible CPU mask: %*pb\n", + cpumask_pr_args(cpu_possible_mask)); /* check with the cores we have woken up */ for (ncore = 0, i = 0; i < NLM_NR_NODES; i++) @@ -209,7 +208,6 @@ static int nlm_parse_cpumask(cpumask_t *wakeup_mask) { uint32_t core0_thr_mask, core_thr_mask; int threadmode, i, j; - char buf[64]; core0_thr_mask = 0; for (i = 0; i < NLM_THREADS_PER_CORE; i++) @@ -244,8 +242,7 @@ static int nlm_parse_cpumask(cpumask_t *wakeup_mask) return threadmode; unsupp: - cpumask_scnprintf(buf, ARRAY_SIZE(buf), wakeup_mask); - panic("Unsupported CPU mask %s", buf); + panic("Unsupported CPU mask %*pb", cpumask_pr_args(wakeup_mask)); return 0; } diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c index 5822e8e200e6..3c63a820fcda 100644 --- a/arch/parisc/kernel/module.c +++ b/arch/parisc/kernel/module.c @@ -219,7 +219,7 @@ void *module_alloc(unsigned long size) * init_data correctly */ return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END, GFP_KERNEL | __GFP_HIGHMEM, - PAGE_KERNEL_RWX, NUMA_NO_NODE, + PAGE_KERNEL_RWX, 0, NUMA_NO_NODE, __builtin_return_address(0)); } diff --git a/arch/powerpc/kernel/cacheinfo.c b/arch/powerpc/kernel/cacheinfo.c index 40198d50b4c2..ae77b7e59889 100644 --- a/arch/powerpc/kernel/cacheinfo.c +++ b/arch/powerpc/kernel/cacheinfo.c @@ -607,19 +607,16 @@ static ssize_t shared_cpu_map_show(struct kobject *k, struct kobj_attribute *att { struct cache_index_dir *index; struct cache *cache; - int len; - int n = 0; + int ret; index = kobj_to_cache_index_dir(k); cache = index->cache; - len = PAGE_SIZE - 2; - if (len > 1) { - n = cpumask_scnprintf(buf, len, &cache->shared_cpu_map); - buf[n++] = '\n'; - buf[n] = '\0'; - } - return n; + ret = scnprintf(buf, PAGE_SIZE - 1, "%*pb\n", + cpumask_pr_args(&cache->shared_cpu_map)); + buf[ret++] = '\n'; + buf[ret] = '\0'; + return ret; } static struct kobj_attribute cache_shared_cpu_map_attr = diff --git a/arch/powerpc/sysdev/xics/ics-opal.c b/arch/powerpc/sysdev/xics/ics-opal.c index 4ba554ec8eaf..68c7e5cc98e0 100644 --- a/arch/powerpc/sysdev/xics/ics-opal.c +++ b/arch/powerpc/sysdev/xics/ics-opal.c @@ -131,10 +131,8 @@ static int ics_opal_set_affinity(struct irq_data *d, wanted_server = xics_get_irq_server(d->irq, cpumask, 1); if (wanted_server < 0) { - char cpulist[128]; - cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask); - pr_warning("%s: No online cpus in the mask %s for irq %d\n", - __func__, cpulist, d->irq); + pr_warning("%s: No online cpus in the mask %*pb for irq %d\n", + __func__, cpumask_pr_args(cpumask), d->irq); return -1; } server = ics_opal_mangle_server(wanted_server); diff --git a/arch/powerpc/sysdev/xics/ics-rtas.c b/arch/powerpc/sysdev/xics/ics-rtas.c index bc81335b2cbc..0af97deb83f3 100644 --- a/arch/powerpc/sysdev/xics/ics-rtas.c +++ b/arch/powerpc/sysdev/xics/ics-rtas.c @@ -140,11 +140,8 @@ static int ics_rtas_set_affinity(struct irq_data *d, irq_server = xics_get_irq_server(d->irq, cpumask, 1); if (irq_server == -1) { - char cpulist[128]; - cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask); - printk(KERN_WARNING - "%s: No online cpus in the mask %s for irq %d\n", - __func__, cpulist, d->irq); + pr_warning("%s: No online cpus in the mask %*pb for irq %d\n", + __func__, cpumask_pr_args(cpumask), d->irq); return -1; } diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c index 409d152585be..36154a2f1814 100644 --- a/arch/s390/kernel/module.c +++ b/arch/s390/kernel/module.c @@ -50,7 +50,7 @@ void *module_alloc(unsigned long size) if (PAGE_ALIGN(size) > MODULES_LEN) return NULL; return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, - GFP_KERNEL, PAGE_KERNEL, NUMA_NO_NODE, + GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE, __builtin_return_address(0)); } #endif diff --git a/arch/sparc/kernel/module.c b/arch/sparc/kernel/module.c index 97655e0fd243..192a617a32f3 100644 --- a/arch/sparc/kernel/module.c +++ b/arch/sparc/kernel/module.c @@ -29,7 +29,7 @@ static void *module_map(unsigned long size) if (PAGE_ALIGN(size) > MODULES_LEN) return NULL; return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, - GFP_KERNEL, PAGE_KERNEL, NUMA_NO_NODE, + GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE, __builtin_return_address(0)); } #else diff --git a/arch/tile/kernel/hardwall.c b/arch/tile/kernel/hardwall.c index c4646bb99342..2fd1694ac1d0 100644 --- a/arch/tile/kernel/hardwall.c +++ b/arch/tile/kernel/hardwall.c @@ -909,11 +909,8 @@ static void hardwall_destroy(struct hardwall_info *info) static int hardwall_proc_show(struct seq_file *sf, void *v) { struct hardwall_info *info = sf->private; - char buf[256]; - int rc = cpulist_scnprintf(buf, sizeof(buf), &info->cpumask); - buf[rc++] = '\n'; - seq_write(sf, buf, rc); + seq_printf(sf, "%*pbl\n", cpumask_pr_args(&info->cpumask)); return 0; } diff --git a/arch/tile/kernel/proc.c b/arch/tile/kernel/proc.c index 6829a9508649..7983e9868df6 100644 --- a/arch/tile/kernel/proc.c +++ b/arch/tile/kernel/proc.c @@ -45,10 +45,9 @@ static int show_cpuinfo(struct seq_file *m, void *v) int n = ptr_to_cpu(v); if (n == 0) { - char buf[NR_CPUS*5]; - cpulist_scnprintf(buf, sizeof(buf), cpu_online_mask); seq_printf(m, "cpu count\t: %d\n", num_online_cpus()); - seq_printf(m, "cpu list\t: %s\n", buf); + seq_printf(m, "cpu list\t: %*pbl\n", + cpumask_pr_args(cpu_online_mask)); seq_printf(m, "model name\t: %s\n", chip_model); seq_printf(m, "flags\t\t:\n"); /* nothing for now */ seq_printf(m, "cpu MHz\t\t: %llu.%06llu\n", diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c index 864eea69556d..f1f579914952 100644 --- a/arch/tile/kernel/setup.c +++ b/arch/tile/kernel/setup.c @@ -215,12 +215,11 @@ early_param("mem", setup_mem); /* compatibility with x86 */ static int __init setup_isolnodes(char *str) { - char buf[MAX_NUMNODES * 5]; if (str == NULL || nodelist_parse(str, isolnodes) != 0) return -EINVAL; - nodelist_scnprintf(buf, sizeof(buf), isolnodes); - pr_info("Set isolnodes value to '%s'\n", buf); + pr_info("Set isolnodes value to '%*pbl'\n", + nodemask_pr_args(&isolnodes)); return 0; } early_param("isolnodes", setup_isolnodes); @@ -1315,11 +1314,9 @@ early_param("disabled_cpus", disabled_cpus); void __init print_disabled_cpus(void) { - if (!cpumask_empty(&disabled_map)) { - char buf[100]; - cpulist_scnprintf(buf, sizeof(buf), &disabled_map); - pr_info("CPUs not available for Linux: %s\n", buf); - } + if (!cpumask_empty(&disabled_map)) + pr_info("CPUs not available for Linux: %*pbl\n", + cpumask_pr_args(&disabled_map)); } static void __init setup_cpu_maps(void) diff --git a/arch/tile/mm/homecache.c b/arch/tile/mm/homecache.c index 0029b3fb651b..40ca30a9fee3 100644 --- a/arch/tile/mm/homecache.c +++ b/arch/tile/mm/homecache.c @@ -115,7 +115,6 @@ void flush_remote(unsigned long cache_pfn, unsigned long cache_control, struct cpumask cache_cpumask_copy, tlb_cpumask_copy; struct cpumask *cache_cpumask, *tlb_cpumask; HV_PhysAddr cache_pa; - char cache_buf[NR_CPUS*5], tlb_buf[NR_CPUS*5]; mb(); /* provided just to simplify "magic hypervisor" mode */ @@ -149,13 +148,12 @@ void flush_remote(unsigned long cache_pfn, unsigned long cache_control, asids, asidcount); if (rc == 0) return; - cpumask_scnprintf(cache_buf, sizeof(cache_buf), &cache_cpumask_copy); - cpumask_scnprintf(tlb_buf, sizeof(tlb_buf), &tlb_cpumask_copy); - pr_err("hv_flush_remote(%#llx, %#lx, %p [%s], %#lx, %#lx, %#lx, %p [%s], %p, %d) = %d\n", - cache_pa, cache_control, cache_cpumask, cache_buf, - (unsigned long)tlb_va, tlb_length, tlb_pgsize, - tlb_cpumask, tlb_buf, asids, asidcount, rc); + pr_err("hv_flush_remote(%#llx, %#lx, %p [%*pb], %#lx, %#lx, %#lx, %p [%*pb], %p, %d) = %d\n", + cache_pa, cache_control, cache_cpumask, + cpumask_pr_args(&cache_cpumask_copy), + (unsigned long)tlb_va, tlb_length, tlb_pgsize, tlb_cpumask, + cpumask_pr_args(&tlb_cpumask_copy), asids, asidcount, rc); panic("Unsafe to continue."); } diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c index be240cc4978d..ace32d7d3864 100644 --- a/arch/tile/mm/init.c +++ b/arch/tile/mm/init.c @@ -353,15 +353,13 @@ static int __init setup_ktext(char *str) /* Neighborhood ktext pages on specified mask */ else if (cpulist_parse(str, &ktext_mask) == 0) { - char buf[NR_CPUS * 5]; - cpulist_scnprintf(buf, sizeof(buf), &ktext_mask); if (cpumask_weight(&ktext_mask) > 1) { ktext_small = 1; - pr_info("ktext: using caching neighborhood %s with small pages\n", - buf); + pr_info("ktext: using caching neighborhood %*pbl with small pages\n", + cpumask_pr_args(&ktext_mask)); } else { - pr_info("ktext: caching on cpu %s with one huge page\n", - buf); + pr_info("ktext: caching on cpu %*pbl with one huge page\n", + cpumask_pr_args(&ktext_mask)); } } @@ -492,11 +490,9 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base) struct cpumask bad; cpumask_andnot(&bad, &ktext_mask, cpu_possible_mask); cpumask_and(&ktext_mask, &ktext_mask, cpu_possible_mask); - if (!cpumask_empty(&bad)) { - char buf[NR_CPUS * 5]; - cpulist_scnprintf(buf, sizeof(buf), &bad); - pr_info("ktext: not using unavailable cpus %s\n", buf); - } + if (!cpumask_empty(&bad)) + pr_info("ktext: not using unavailable cpus %*pbl\n", + cpumask_pr_args(&bad)); if (cpumask_empty(&ktext_mask)) { pr_warn("ktext: no valid cpus; caching on %d\n", smp_processor_id()); diff --git a/arch/unicore32/kernel/module.c b/arch/unicore32/kernel/module.c index dc41f6dfedb6..e191b3448bd3 100644 --- a/arch/unicore32/kernel/module.c +++ b/arch/unicore32/kernel/module.c @@ -25,7 +25,7 @@ void *module_alloc(unsigned long size) { return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, - GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE, + GFP_KERNEL, PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE, __builtin_return_address(0)); } diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 33ce9a344e38..eb1cf898ed3c 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -85,6 +85,7 @@ config X86 select HAVE_CMPXCHG_LOCAL select HAVE_CMPXCHG_DOUBLE select HAVE_ARCH_KMEMCHECK + select HAVE_ARCH_KASAN if X86_64 && SPARSEMEM_VMEMMAP select HAVE_USER_RETURN_NOTIFIER select ARCH_BINFMT_ELF_RANDOMIZE_PIE select HAVE_ARCH_JUMP_LABEL diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile index 3db07f30636f..57bbf2fb21f6 100644 --- a/arch/x86/boot/Makefile +++ b/arch/x86/boot/Makefile @@ -14,6 +14,8 @@ # Set it to -DSVGA_MODE=NORMAL_VGA if you just want the EGA/VGA mode. # The number is the same as you would ordinarily press at bootup. +KASAN_SANITIZE := n + SVGA_MODE := -DSVGA_MODE=NORMAL_VGA targets := vmlinux.bin setup.bin setup.elf bzImage diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index ad754b4411f7..843feb3eb20b 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -16,6 +16,8 @@ # (see scripts/Makefile.lib size_append) # compressed vmlinux.bin.all + u32 size of vmlinux.bin.all +KASAN_SANITIZE := n + targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \ vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index 92b9a5f2aed6..ef17683484e9 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -13,8 +13,7 @@ #include <asm/setup.h> #include <asm/desc.h> -#undef memcpy /* Use memcpy from misc.c */ - +#include "../string.h" #include "eboot.h" static efi_system_table_t *sys_table; diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index 24e3e569a13c..04477d68403f 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -7,6 +7,7 @@ * we just keep it from happening */ #undef CONFIG_PARAVIRT +#undef CONFIG_KASAN #ifdef CONFIG_X86_32 #define _ASM_X86_DESC_H 1 #endif diff --git a/arch/x86/include/asm/kasan.h b/arch/x86/include/asm/kasan.h new file mode 100644 index 000000000000..8b22422fbad8 --- /dev/null +++ b/arch/x86/include/asm/kasan.h @@ -0,0 +1,31 @@ +#ifndef _ASM_X86_KASAN_H +#define _ASM_X86_KASAN_H + +/* + * Compiler uses shadow offset assuming that addresses start + * from 0. Kernel addresses don't start from 0, so shadow + * for kernel really starts from compiler's shadow offset + + * 'kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT + */ +#define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET + \ + (0xffff800000000000ULL >> 3)) +/* 47 bits for kernel address -> (47 - 3) bits for shadow */ +#define KASAN_SHADOW_END (KASAN_SHADOW_START + (1ULL << (47 - 3))) + +#ifndef __ASSEMBLY__ + +extern pte_t kasan_zero_pte[]; +extern pte_t kasan_zero_pmd[]; +extern pte_t kasan_zero_pud[]; + +#ifdef CONFIG_KASAN +void __init kasan_map_early_shadow(pgd_t *pgd); +void __init kasan_init(void); +#else +static inline void kasan_map_early_shadow(pgd_t *pgd) { } +static inline void kasan_init(void) { } +#endif + +#endif + +#endif diff --git a/arch/x86/include/asm/page_64_types.h b/arch/x86/include/asm/page_64_types.h index 75450b2c7be4..4edd53b79a81 100644 --- a/arch/x86/include/asm/page_64_types.h +++ b/arch/x86/include/asm/page_64_types.h @@ -1,17 +1,23 @@ #ifndef _ASM_X86_PAGE_64_DEFS_H #define _ASM_X86_PAGE_64_DEFS_H -#define THREAD_SIZE_ORDER 2 +#ifdef CONFIG_KASAN +#define KASAN_STACK_ORDER 1 +#else +#define KASAN_STACK_ORDER 0 +#endif + +#define THREAD_SIZE_ORDER (2 + KASAN_STACK_ORDER) #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) #define CURRENT_MASK (~(THREAD_SIZE - 1)) -#define EXCEPTION_STACK_ORDER 0 +#define EXCEPTION_STACK_ORDER (0 + KASAN_STACK_ORDER) #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) -#define IRQ_STACK_ORDER 2 +#define IRQ_STACK_ORDER (2 + KASAN_STACK_ORDER) #define IRQ_STACK_SIZE (PAGE_SIZE << IRQ_STACK_ORDER) #define DOUBLEFAULT_STACK 1 diff --git a/arch/x86/include/asm/string_64.h b/arch/x86/include/asm/string_64.h index 19e2c468fc2c..e4661196994e 100644 --- a/arch/x86/include/asm/string_64.h +++ b/arch/x86/include/asm/string_64.h @@ -27,11 +27,12 @@ static __always_inline void *__inline_memcpy(void *to, const void *from, size_t function. */ #define __HAVE_ARCH_MEMCPY 1 +extern void *__memcpy(void *to, const void *from, size_t len); + #ifndef CONFIG_KMEMCHECK #if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4 extern void *memcpy(void *to, const void *from, size_t len); #else -extern void *__memcpy(void *to, const void *from, size_t len); #define memcpy(dst, src, len) \ ({ \ size_t __len = (len); \ @@ -53,9 +54,11 @@ extern void *__memcpy(void *to, const void *from, size_t len); #define __HAVE_ARCH_MEMSET void *memset(void *s, int c, size_t n); +void *__memset(void *s, int c, size_t n); #define __HAVE_ARCH_MEMMOVE void *memmove(void *dest, const void *src, size_t count); +void *__memmove(void *dest, const void *src, size_t count); int memcmp(const void *cs, const void *ct, size_t count); size_t strlen(const char *s); @@ -63,6 +66,19 @@ char *strcpy(char *dest, const char *src); char *strcat(char *dest, const char *src); int strcmp(const char *cs, const char *ct); +#if defined(CONFIG_KASAN) && !defined(__SANITIZE_ADDRESS__) + +/* + * For files that not instrumented (e.g. mm/slub.c) we + * should use not instrumented version of mem* functions. + */ + +#undef memcpy +#define memcpy(dst, src, len) __memcpy(dst, src, len) +#define memmove(dst, src, len) __memmove(dst, src, len) +#define memset(s, c, n) __memset(s, c, n) +#endif + #endif /* __KERNEL__ */ #endif /* _ASM_X86_STRING_64_H */ diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 732223496968..cdb1b70ddad0 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -16,6 +16,10 @@ CFLAGS_REMOVE_ftrace.o = -pg CFLAGS_REMOVE_early_printk.o = -pg endif +KASAN_SANITIZE_head$(BITS).o := n +KASAN_SANITIZE_dumpstack.o := n +KASAN_SANITIZE_dumpstack_$(BITS).o := n + CFLAGS_irq.o := -I$(src)/../include/asm/trace obj-y := process_$(BITS).o signal.o entry_$(BITS).o diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c index c7035073dfc1..659643376dbf 100644 --- a/arch/x86/kernel/cpu/intel_cacheinfo.c +++ b/arch/x86/kernel/cpu/intel_cacheinfo.c @@ -952,20 +952,18 @@ static ssize_t show_size(struct _cpuid4_info *this_leaf, char *buf, static ssize_t show_shared_cpu_map_func(struct _cpuid4_info *this_leaf, int type, char *buf) { - ptrdiff_t len = PTR_ALIGN(buf + PAGE_SIZE - 1, PAGE_SIZE) - buf; - int n = 0; - - if (len > 1) { - const struct cpumask *mask; - - mask = to_cpumask(this_leaf->shared_cpu_map); - n = type ? - cpulist_scnprintf(buf, len-2, mask) : - cpumask_scnprintf(buf, len-2, mask); - buf[n++] = '\n'; - buf[n] = '\0'; - } - return n; + const struct cpumask *mask = to_cpumask(this_leaf->shared_cpu_map); + int ret; + + if (type) + ret = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", + cpumask_pr_args(mask)); + else + ret = scnprintf(buf, PAGE_SIZE - 1, "%*pb", + cpumask_pr_args(mask)); + buf[ret++] = '\n'; + buf[ret] = '\0'; + return ret; } static inline ssize_t show_shared_cpu_map(struct _cpuid4_info *leaf, char *buf, diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c index b74ebc7c4402..cf3df1d8d039 100644 --- a/arch/x86/kernel/dumpstack.c +++ b/arch/x86/kernel/dumpstack.c @@ -265,7 +265,10 @@ int __die(const char *str, struct pt_regs *regs, long err) printk("SMP "); #endif #ifdef CONFIG_DEBUG_PAGEALLOC - printk("DEBUG_PAGEALLOC"); + printk("DEBUG_PAGEALLOC "); +#endif +#ifdef CONFIG_KASAN + printk("KASAN"); #endif printk("\n"); if (notify_die(DIE_OOPS, str, regs, err, diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index eda1a865641e..efcddfaf05f9 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -27,6 +27,7 @@ #include <asm/bios_ebda.h> #include <asm/bootparam_utils.h> #include <asm/microcode.h> +#include <asm/kasan.h> /* * Manage page tables very early on. @@ -46,7 +47,7 @@ static void __init reset_early_page_tables(void) next_early_pgt = 0; - write_cr3(__pa(early_level4_pgt)); + write_cr3(__pa_nodebug(early_level4_pgt)); } /* Create a new PMD entry */ @@ -59,7 +60,7 @@ int __init early_make_pgtable(unsigned long address) pmdval_t pmd, *pmd_p; /* Invalid address or early pgt is done ? */ - if (physaddr >= MAXMEM || read_cr3() != __pa(early_level4_pgt)) + if (physaddr >= MAXMEM || read_cr3() != __pa_nodebug(early_level4_pgt)) return -1; again: @@ -158,6 +159,8 @@ asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data) /* Kill off the identity-map trampoline */ reset_early_page_tables(); + kasan_map_early_shadow(early_level4_pgt); + /* clear bss before set_intr_gate with early_idt_handler */ clear_bss(); @@ -179,6 +182,8 @@ asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data) /* set init_level4_pgt kernel high mapping*/ init_level4_pgt[511] = early_level4_pgt[511]; + kasan_map_early_shadow(init_level4_pgt); + x86_64_start_reservations(real_mode_data); } diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index a468c0a65c42..6fd514d9f69a 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -514,8 +514,38 @@ ENTRY(phys_base) /* This must match the first entry in level2_kernel_pgt */ .quad 0x0000000000000000 +#ifdef CONFIG_KASAN +#define FILL(VAL, COUNT) \ + .rept (COUNT) ; \ + .quad (VAL) ; \ + .endr + +NEXT_PAGE(kasan_zero_pte) + FILL(kasan_zero_page - __START_KERNEL_map + _KERNPG_TABLE, 512) +NEXT_PAGE(kasan_zero_pmd) + FILL(kasan_zero_pte - __START_KERNEL_map + _KERNPG_TABLE, 512) +NEXT_PAGE(kasan_zero_pud) + FILL(kasan_zero_pmd - __START_KERNEL_map + _KERNPG_TABLE, 512) + +#undef FILL +#endif + + #include "../../x86/xen/xen-head.S" __PAGE_ALIGNED_BSS NEXT_PAGE(empty_zero_page) .skip PAGE_SIZE + +#ifdef CONFIG_KASAN +/* + * This page used as early shadow. We don't use empty_zero_page + * at early stages, stack instrumentation could write some garbage + * to this page. + * Latter we reuse it as zero shadow for large ranges of memory + * that allowed to access, but not instrumented by kasan + * (vmalloc/vmemmap ...). + */ +NEXT_PAGE(kasan_zero_page) + .skip PAGE_SIZE +#endif diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c index e69f9882bf95..d1ac80b72c72 100644 --- a/arch/x86/kernel/module.c +++ b/arch/x86/kernel/module.c @@ -24,6 +24,7 @@ #include <linux/fs.h> #include <linux/string.h> #include <linux/kernel.h> +#include <linux/kasan.h> #include <linux/bug.h> #include <linux/mm.h> #include <linux/gfp.h> @@ -83,13 +84,22 @@ static unsigned long int get_module_load_offset(void) void *module_alloc(unsigned long size) { + void *p; + if (PAGE_ALIGN(size) > MODULES_LEN) return NULL; - return __vmalloc_node_range(size, 1, + + p = __vmalloc_node_range(size, MODULE_ALIGN, MODULES_VADDR + get_module_load_offset(), MODULES_END, GFP_KERNEL | __GFP_HIGHMEM, - PAGE_KERNEL_EXEC, NUMA_NO_NODE, + PAGE_KERNEL_EXEC, 0, NUMA_NO_NODE, __builtin_return_address(0)); + if (p && (kasan_module_alloc(p, size) < 0)) { + vfree(p); + return NULL; + } + + return p; } #ifdef CONFIG_X86_32 diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index c4648adadd7d..27d200929864 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -89,6 +89,7 @@ #include <asm/cacheflush.h> #include <asm/processor.h> #include <asm/bugs.h> +#include <asm/kasan.h> #include <asm/vsyscall.h> #include <asm/cpu.h> @@ -1174,6 +1175,8 @@ void __init setup_arch(char **cmdline_p) x86_init.paging.pagetable_init(); + kasan_init(); + if (boot_cpu_data.cpuid_level >= 0) { /* A CPU has %cr4 if and only if it has CPUID */ mmu_cr4_features = read_cr4(); diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c index 040681928e9d..37d8fa4438f0 100644 --- a/arch/x86/kernel/x8664_ksyms_64.c +++ b/arch/x86/kernel/x8664_ksyms_64.c @@ -50,13 +50,19 @@ EXPORT_SYMBOL(csum_partial); #undef memset #undef memmove +extern void *__memset(void *, int, __kernel_size_t); +extern void *__memcpy(void *, const void *, __kernel_size_t); +extern void *__memmove(void *, const void *, __kernel_size_t); extern void *memset(void *, int, __kernel_size_t); extern void *memcpy(void *, const void *, __kernel_size_t); -extern void *__memcpy(void *, const void *, __kernel_size_t); +extern void *memmove(void *, const void *, __kernel_size_t); + +EXPORT_SYMBOL(__memset); +EXPORT_SYMBOL(__memcpy); +EXPORT_SYMBOL(__memmove); EXPORT_SYMBOL(memset); EXPORT_SYMBOL(memcpy); -EXPORT_SYMBOL(__memcpy); EXPORT_SYMBOL(memmove); #ifndef CONFIG_DEBUG_VIRTUAL diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S index 56313a326188..89b53c9968e7 100644 --- a/arch/x86/lib/memcpy_64.S +++ b/arch/x86/lib/memcpy_64.S @@ -53,6 +53,8 @@ .Lmemcpy_e_e: .previous +.weak memcpy + ENTRY(__memcpy) ENTRY(memcpy) CFI_STARTPROC @@ -199,8 +201,8 @@ ENDPROC(__memcpy) * only outcome... */ .section .altinstructions, "a" - altinstruction_entry memcpy,.Lmemcpy_c,X86_FEATURE_REP_GOOD,\ + altinstruction_entry __memcpy,.Lmemcpy_c,X86_FEATURE_REP_GOOD,\ .Lmemcpy_e-.Lmemcpy_c,.Lmemcpy_e-.Lmemcpy_c - altinstruction_entry memcpy,.Lmemcpy_c_e,X86_FEATURE_ERMS, \ + altinstruction_entry __memcpy,.Lmemcpy_c_e,X86_FEATURE_ERMS, \ .Lmemcpy_e_e-.Lmemcpy_c_e,.Lmemcpy_e_e-.Lmemcpy_c_e .previous diff --git a/arch/x86/lib/memmove_64.S b/arch/x86/lib/memmove_64.S index 65268a6104f4..9c4b530575da 100644 --- a/arch/x86/lib/memmove_64.S +++ b/arch/x86/lib/memmove_64.S @@ -24,7 +24,10 @@ * Output: * rax: dest */ +.weak memmove + ENTRY(memmove) +ENTRY(__memmove) CFI_STARTPROC /* Handle more 32 bytes in loop */ @@ -220,4 +223,5 @@ ENTRY(memmove) .Lmemmove_end_forward-.Lmemmove_begin_forward, \ .Lmemmove_end_forward_efs-.Lmemmove_begin_forward_efs .previous +ENDPROC(__memmove) ENDPROC(memmove) diff --git a/arch/x86/lib/memset_64.S b/arch/x86/lib/memset_64.S index 2dcb3808cbda..6f44935c6a60 100644 --- a/arch/x86/lib/memset_64.S +++ b/arch/x86/lib/memset_64.S @@ -56,6 +56,8 @@ .Lmemset_e_e: .previous +.weak memset + ENTRY(memset) ENTRY(__memset) CFI_STARTPROC @@ -147,8 +149,8 @@ ENDPROC(__memset) * feature to implement the right patch order. */ .section .altinstructions,"a" - altinstruction_entry memset,.Lmemset_c,X86_FEATURE_REP_GOOD,\ - .Lfinal-memset,.Lmemset_e-.Lmemset_c - altinstruction_entry memset,.Lmemset_c_e,X86_FEATURE_ERMS, \ - .Lfinal-memset,.Lmemset_e_e-.Lmemset_c_e + altinstruction_entry __memset,.Lmemset_c,X86_FEATURE_REP_GOOD,\ + .Lfinal-__memset,.Lmemset_e-.Lmemset_c + altinstruction_entry __memset,.Lmemset_c_e,X86_FEATURE_ERMS, \ + .Lfinal-__memset,.Lmemset_e_e-.Lmemset_c_e .previous diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index ecfdc46a024a..c4cc74006c61 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -20,6 +20,9 @@ obj-$(CONFIG_HIGHMEM) += highmem_32.o obj-$(CONFIG_KMEMCHECK) += kmemcheck/ +KASAN_SANITIZE_kasan_init_$(BITS).o := n +obj-$(CONFIG_KASAN) += kasan_init_$(BITS).o + obj-$(CONFIG_MMIOTRACE) += mmiotrace.o mmiotrace-y := kmmio.o pf_in.o mmio-mod.o obj-$(CONFIG_MMIOTRACE_TEST) += testmmiotrace.o diff --git a/arch/x86/mm/kasan_init_64.c b/arch/x86/mm/kasan_init_64.c new file mode 100644 index 000000000000..4860906c6b9f --- /dev/null +++ b/arch/x86/mm/kasan_init_64.c @@ -0,0 +1,206 @@ +#include <linux/bootmem.h> +#include <linux/kasan.h> +#include <linux/kdebug.h> +#include <linux/mm.h> +#include <linux/sched.h> +#include <linux/vmalloc.h> + +#include <asm/tlbflush.h> +#include <asm/sections.h> + +extern pgd_t early_level4_pgt[PTRS_PER_PGD]; +extern struct range pfn_mapped[E820_X_MAX]; + +extern unsigned char kasan_zero_page[PAGE_SIZE]; + +static int __init map_range(struct range *range) +{ + unsigned long start; + unsigned long end; + + start = (unsigned long)kasan_mem_to_shadow(pfn_to_kaddr(range->start)); + end = (unsigned long)kasan_mem_to_shadow(pfn_to_kaddr(range->end)); + + /* + * end + 1 here is intentional. We check several shadow bytes in advance + * to slightly speed up fastpath. In some rare cases we could cross + * boundary of mapped shadow, so we just map some more here. + */ + return vmemmap_populate(start, end + 1, NUMA_NO_NODE); +} + +static void __init clear_pgds(unsigned long start, + unsigned long end) +{ + for (; start < end; start += PGDIR_SIZE) + pgd_clear(pgd_offset_k(start)); +} + +void __init kasan_map_early_shadow(pgd_t *pgd) +{ + int i; + unsigned long start = KASAN_SHADOW_START; + unsigned long end = KASAN_SHADOW_END; + + for (i = pgd_index(start); start < end; i++) { + pgd[i] = __pgd(__pa_nodebug(kasan_zero_pud) + | _KERNPG_TABLE); + start += PGDIR_SIZE; + } +} + +static int __init zero_pte_populate(pmd_t *pmd, unsigned long addr, + unsigned long end) +{ + pte_t *pte = pte_offset_kernel(pmd, addr); + + while (addr + PAGE_SIZE <= end) { + WARN_ON(!pte_none(*pte)); + set_pte(pte, __pte(__pa_nodebug(kasan_zero_page) + | __PAGE_KERNEL_RO)); + addr += PAGE_SIZE; + pte = pte_offset_kernel(pmd, addr); + } + return 0; +} + +static int __init zero_pmd_populate(pud_t *pud, unsigned long addr, + unsigned long end) +{ + int ret = 0; + pmd_t *pmd = pmd_offset(pud, addr); + + while (IS_ALIGNED(addr, PMD_SIZE) && addr + PMD_SIZE <= end) { + WARN_ON(!pmd_none(*pmd)); + set_pmd(pmd, __pmd(__pa_nodebug(kasan_zero_pte) + | __PAGE_KERNEL_RO)); + addr += PMD_SIZE; + pmd = pmd_offset(pud, addr); + } + if (addr < end) { + if (pmd_none(*pmd)) { + void *p = vmemmap_alloc_block(PAGE_SIZE, NUMA_NO_NODE); + if (!p) + return -ENOMEM; + set_pmd(pmd, __pmd(__pa_nodebug(p) | _KERNPG_TABLE)); + } + ret = zero_pte_populate(pmd, addr, end); + } + return ret; +} + + +static int __init zero_pud_populate(pgd_t *pgd, unsigned long addr, + unsigned long end) +{ + int ret = 0; + pud_t *pud = pud_offset(pgd, addr); + + while (IS_ALIGNED(addr, PUD_SIZE) && addr + PUD_SIZE <= end) { + WARN_ON(!pud_none(*pud)); + set_pud(pud, __pud(__pa_nodebug(kasan_zero_pmd) + | __PAGE_KERNEL_RO)); + addr += PUD_SIZE; + pud = pud_offset(pgd, addr); + } + + if (addr < end) { + if (pud_none(*pud)) { + void *p = vmemmap_alloc_block(PAGE_SIZE, NUMA_NO_NODE); + if (!p) + return -ENOMEM; + set_pud(pud, __pud(__pa_nodebug(p) | _KERNPG_TABLE)); + } + ret = zero_pmd_populate(pud, addr, end); + } + return ret; +} + +static int __init zero_pgd_populate(unsigned long addr, unsigned long end) +{ + int ret = 0; + pgd_t *pgd = pgd_offset_k(addr); + + while (IS_ALIGNED(addr, PGDIR_SIZE) && addr + PGDIR_SIZE <= end) { + WARN_ON(!pgd_none(*pgd)); + set_pgd(pgd, __pgd(__pa_nodebug(kasan_zero_pud) + | __PAGE_KERNEL_RO)); + addr += PGDIR_SIZE; + pgd = pgd_offset_k(addr); + } + + if (addr < end) { + if (pgd_none(*pgd)) { + void *p = vmemmap_alloc_block(PAGE_SIZE, NUMA_NO_NODE); + if (!p) + return -ENOMEM; + set_pgd(pgd, __pgd(__pa_nodebug(p) | _KERNPG_TABLE)); + } + ret = zero_pud_populate(pgd, addr, end); + } + return ret; +} + + +static void __init populate_zero_shadow(const void *start, const void *end) +{ + if (zero_pgd_populate((unsigned long)start, (unsigned long)end)) + panic("kasan: unable to map zero shadow!"); +} + + +#ifdef CONFIG_KASAN_INLINE +static int kasan_die_handler(struct notifier_block *self, + unsigned long val, + void *data) +{ + if (val == DIE_GPF) { + pr_emerg("CONFIG_KASAN_INLINE enabled"); + pr_emerg("GPF could be caused by NULL-ptr deref or user memory access"); + } + return NOTIFY_OK; +} + +static struct notifier_block kasan_die_notifier = { + .notifier_call = kasan_die_handler, +}; +#endif + +void __init kasan_init(void) +{ + int i; + +#ifdef CONFIG_KASAN_INLINE + register_die_notifier(&kasan_die_notifier); +#endif + + memcpy(early_level4_pgt, init_level4_pgt, sizeof(early_level4_pgt)); + load_cr3(early_level4_pgt); + + clear_pgds(KASAN_SHADOW_START, KASAN_SHADOW_END); + + populate_zero_shadow((void *)KASAN_SHADOW_START, + kasan_mem_to_shadow((void *)PAGE_OFFSET)); + + for (i = 0; i < E820_X_MAX; i++) { + if (pfn_mapped[i].end == 0) + break; + + if (map_range(&pfn_mapped[i])) + panic("kasan: unable to allocate shadow!"); + } + populate_zero_shadow(kasan_mem_to_shadow((void *)PAGE_OFFSET + MAXMEM), + kasan_mem_to_shadow((void *)__START_KERNEL_map)); + + vmemmap_populate((unsigned long)kasan_mem_to_shadow(_stext), + (unsigned long)kasan_mem_to_shadow(_end), + NUMA_NO_NODE); + + populate_zero_shadow(kasan_mem_to_shadow((void *)MODULES_END), + (void *)KASAN_SHADOW_END); + + memset(kasan_zero_page, 0, PAGE_SIZE); + + load_cr3(init_level4_pgt); + init_task.kasan_depth = 0; +} diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index 1a883705a12a..cd4785bbacb9 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -794,7 +794,6 @@ int early_cpu_to_node(int cpu) void debug_cpumask_set_cpu(int cpu, int node, bool enable) { struct cpumask *mask; - char buf[64]; if (node == NUMA_NO_NODE) { /* early_cpu_to_node() already emits a warning and trace */ @@ -812,10 +811,9 @@ void debug_cpumask_set_cpu(int cpu, int node, bool enable) else cpumask_clear_cpu(cpu, mask); - cpulist_scnprintf(buf, sizeof(buf), mask); - printk(KERN_DEBUG "%s cpu %d node %d: mask now %s\n", + printk(KERN_DEBUG "%s cpu %d node %d: mask now %*pbl\n", enable ? "numa_add_cpu" : "numa_remove_cpu", - cpu, node, buf); + cpu, node, cpumask_pr_args(mask)); return; } diff --git a/arch/x86/platform/uv/uv_nmi.c b/arch/x86/platform/uv/uv_nmi.c index c6b146e67116..7488cafab955 100644 --- a/arch/x86/platform/uv/uv_nmi.c +++ b/arch/x86/platform/uv/uv_nmi.c @@ -273,20 +273,6 @@ static inline void uv_clear_nmi(int cpu) } } -/* Print non-responding cpus */ -static void uv_nmi_nr_cpus_pr(char *fmt) -{ - static char cpu_list[1024]; - int len = sizeof(cpu_list); - int c = cpumask_weight(uv_nmi_cpu_mask); - int n = cpulist_scnprintf(cpu_list, len, uv_nmi_cpu_mask); - - if (n >= len-1) - strcpy(&cpu_list[len - 6], "...\n"); - - printk(fmt, c, cpu_list); -} - /* Ping non-responding cpus attemping to force them into the NMI handler */ static void uv_nmi_nr_cpus_ping(void) { @@ -371,16 +357,19 @@ static void uv_nmi_wait(int master) break; /* if not all made it in, send IPI NMI to them */ - uv_nmi_nr_cpus_pr(KERN_ALERT - "UV: Sending NMI IPI to %d non-responding CPUs: %s\n"); + pr_alert("UV: Sending NMI IPI to %d non-responding CPUs: %*pbl\n", + cpumask_weight(uv_nmi_cpu_mask), + cpumask_pr_args(uv_nmi_cpu_mask)); + uv_nmi_nr_cpus_ping(); /* if all cpus are in, then done */ if (!uv_nmi_wait_cpus(0)) break; - uv_nmi_nr_cpus_pr(KERN_ALERT - "UV: %d CPUs not in NMI loop: %s\n"); + pr_alert("UV: %d CPUs not in NMI loop: %*pbl\n", + cpumask_weight(uv_nmi_cpu_mask), + cpumask_pr_args(uv_nmi_cpu_mask)); } while (0); pr_alert("UV: %d of %d CPUs in NMI\n", diff --git a/arch/x86/realmode/Makefile b/arch/x86/realmode/Makefile index 94f7fbe97b08..e02c2c6c56a5 100644 --- a/arch/x86/realmode/Makefile +++ b/arch/x86/realmode/Makefile @@ -6,7 +6,7 @@ # for more details. # # - +KASAN_SANITIZE := n subdir- := rm obj-y += init.o diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile index 7c0d7be176a5..2730d775ef9a 100644 --- a/arch/x86/realmode/rm/Makefile +++ b/arch/x86/realmode/rm/Makefile @@ -6,6 +6,7 @@ # for more details. # # +KASAN_SANITIZE := n always := realmode.bin realmode.relocs diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile index 09297c8e1fcd..7b9be9822724 100644 --- a/arch/x86/vdso/Makefile +++ b/arch/x86/vdso/Makefile @@ -3,6 +3,7 @@ # KBUILD_CFLAGS += $(DISABLE_LTO) +KASAN_SANITIZE := n VDSO64-$(CONFIG_X86_64) := y VDSOX32-$(CONFIG_X86_X32_ABI) := y diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c index 06370ccea9e9..28fc57ef5b86 100644 --- a/arch/xtensa/kernel/setup.c +++ b/arch/xtensa/kernel/setup.c @@ -574,12 +574,9 @@ void machine_power_off(void) static int c_show(struct seq_file *f, void *slot) { - char buf[NR_CPUS * 5]; - - cpulist_scnprintf(buf, sizeof(buf), cpu_online_mask); /* high-level stuff */ seq_printf(f, "CPU count\t: %u\n" - "CPU list\t: %s\n" + "CPU list\t: %*pbl\n" "vendor_id\t: Tensilica\n" "model\t\t: Xtensa " XCHAL_HW_VERSION_NAME "\n" "core ID\t\t: " XCHAL_CORE_ID "\n" @@ -588,7 +585,7 @@ c_show(struct seq_file *f, void *slot) "cpu MHz\t\t: %lu.%02lu\n" "bogomips\t: %lu.%02lu\n", num_online_cpus(), - buf, + cpumask_pr_args(cpu_online_mask), XCHAL_BUILD_UNIQUE_ID, XCHAL_HAVE_BE ? "big" : "little", ccount_freq/1000000, |